By isolating the valve then remove it and replace it
The term "hose bib" likely originated from the combination of "hose," which refers to a flexible tube used for conveying water, and "bib," which typically refers to a piece of clothing worn to protect the front of the body. Together, "hose bib" describes the outdoor water faucet with a threaded spout used to connect a garden hose for watering purposes.
A hose bib (or bibb) is a threaded faucet also known as a wall hydrant. The simplest example would be the standard exterior faucet of a residence. They typically can be found with a single valve stem directly before the spout. In colder climates, exterior hose bibs should be installed in-line with an interior wall so that they can be recessed within the wall to provide protection from freezing.
3/4" garden hose threads (GHT).
Spindle, washer retaining ring , bib washer and bib screw
An old man hose bib is a type of outdoor faucet that can be easily turned on and off, designed with a large handle that is easier to grip and maneuver for individuals with reduced hand strength or mobility. It is often called an "old man" hose bib due to its user-friendly design for older adults.
With the ones I've seen, they simply screw on to the bib just like a hose would. So you just unscrew the old one and screw on the new one. In Texas with homes built in the 1980's forward, you usually cannot remove just the anti syphon device because the commercial plumbers remove or break off the set screw that comes with the assembly that would allow for removal. I had to have a plumber remove the hose bib (simple process) and then replace it along with a new anti syphon valve. This put an end to the annoying dribbling of water. Cost me $65. I'll do it myself the next time as it is actually quite simple now that I know how to do it. I will install it with a syphon valve that I can remove.
Go to Home Depot and get a pressure guage the will screw on your water hose faucet.
5
i believe the pressure does not change but the volume of water you will be able to use will be less
Pull upward on the hose that the PCV valve is in. The PCV valve will pull out of the hose. The PCV valve is located in the valve cover.
Usually the bib nearest inlet like front garden hose bib will give you a good read before it is reduced by any other valves etc. or spit off into a series of different pipes.